Choose the underlined word or phrase A; B; C or D that needs correcting

I. Choose the underlined word or phrase A,B,C or D that needs correcting : (1.0pt)
1. There is the colourful picture on the wall. 
              A  B                               C          D
2. Ondra dances more skillful than Eva. 
                   A        B       C        D
3. Who did he gave the doll on the birthday?
      A                 B            C         D
4. Although the island has no clean water and electric, it attracts lots of tourists
         A                                B                                C                                     D